package day5;

/**
 * @author oldliu
 * @since 1.0
 */
public class Digui {
    public static void a(){
        System.out.println("This a");
        a();
    }
    public static void b(){
        a();
    }
    //阶乘
    public static long jc(int k){
        if(k<=1)
            return 1;
        return k*jc(k-1);
    }
    //斐波拉契数列.求这个数列的第K项
    public static long fb(int k){
        return 0;
    }
    public static void main(String[] args) {
        // a();
        System.out.println(jc(13));
    }
}
